JP5955649B2 - Fuse and method for manufacturing fuse - Google Patents

Fuse and method for manufacturing fuse Download PDF

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Publication number
JP5955649B2
JP5955649B2 JP2012124706A JP2012124706A JP5955649B2 JP 5955649 B2 JP5955649 B2 JP 5955649B2 JP 2012124706 A JP2012124706 A JP 2012124706A JP 2012124706 A JP2012124706 A JP 2012124706A JP 5955649 B2 JP5955649 B2 JP 5955649B2
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fuse
terminal connection
fusible
main body
melting point
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JP2013251117A (en
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裕介 松本
裕介 松本
岩田　匡司
匡司 岩田
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Yazaki Corp
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Yazaki Corp
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Priority to JP2012124706A priority Critical patent/JP5955649B2/en
Priority to PCT/JP2013/064633 priority patent/WO2013180060A1/en
Priority to EP13796992.9A priority patent/EP2858086A4/en
Publication of JP2013251117A publication Critical patent/JP2013251117A/en
Priority to US14/548,350 priority patent/US20150077212A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/044—General constructions or structure of low voltage fuses, i.e. below 1000 V, or of fuses where the applicable voltage is not specified
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/06—Fusible members characterised by the fusible material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/055—Fusible members
    • H01H85/08—Fusible members characterised by the shape or form of the fusible member
    • H01H85/11—Fusible members characterised by the shape or form of the fusible member with applied local area of a metal which, on melting, forms a eutectic with the main material of the fusible member, i.e. M-effect devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • H01H85/147—Parallel-side contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/05—Component parts thereof
    • H01H85/143—Electrical contacts; Fastening fusible members to such contacts
    • H01H85/153—Knife-blade-end contacts

Description

本発明は、ヒューズに関し、特に、車両に搭載されるヒューズに関する。   The present invention relates to a fuse, and more particularly to a fuse mounted on a vehicle.

従来から、自動車等の車両には、各種電子機器の電気回路を保護するために、複数のヒューズが用いられている。この種のヒューズは、相手側端子と接続される一対の端子接続部と、一対の端子接続部の間に設けられて定格以上（いわゆる、過電流）の電流を遮断する可溶部と、端子接続部の一部を露出した状態で可溶部を覆うカバー部材とを備えている。端子接続部及び可溶部とは、導通性のプレートによって一体に形成されている。   2. Description of the Related Art Conventionally, a plurality of fuses are used in vehicles such as automobiles in order to protect electric circuits of various electronic devices. This type of fuse has a pair of terminal connection parts connected to the counterpart terminal, a fusible part provided between the pair of terminal connection parts and blocking a current exceeding the rating (so-called overcurrent), and a terminal And a cover member that covers the fusible portion with a part of the connecting portion exposed. The terminal connection portion and the fusible portion are integrally formed by a conductive plate.

一般的に、可溶部は、一対の端子接続部同士を連結する可溶導体部と、可溶導体部に設けられて可溶導体部よりも融点の低い金属（例えば、錫或いはその合金）からなる低融点金属と、低融点金属を加締めて固定する加締め部とを備えている。   In general, the fusible part includes a fusible conductor part that connects a pair of terminal connection parts, and a metal that is provided in the fusible conductor part and has a lower melting point than the fusible conductor part (for example, tin or an alloy thereof). And a caulking portion for caulking and fixing the low melting point metal.

加締め部は、可溶導体部の両側縁から立ち上げることによって形成されており、いわゆる、オープンバレル型をなしている（例えば、特許文献１参照）。そして、加締め部は、可溶導体部の両側縁から低融点金属を包囲するように加締められることによって、可溶導体部に低融点金属を固定している。   The caulking portion is formed by rising from both side edges of the soluble conductor portion, and is a so-called open barrel type (see, for example, Patent Document 1). And the caulking part fixes the low melting point metal to the fusible conductor part by being caulked so as to surround the low melting point metal from both side edges of the fusible conductor part.

特開平７−１３０２７７号公報JP-A-7-130277

しかしながら、上述した従来のヒューズでは、加締め部が可溶導体部の両側縁から低融点金属を包囲するように加締められるため、可溶導体部から低融点金属や加締め部が突出してしまい、ヒューズの大型化を招いてしまう。このため、可溶導体部からの低融点金属や加締め部の突出量をできる限り少なくすることが望まれていた。   However, in the conventional fuse described above, since the crimped portion is crimped so as to surround the low melting point metal from both side edges of the soluble conductor portion, the low melting point metal and the crimped portion protrude from the soluble conductor portion. This leads to an increase in the size of the fuse. For this reason, it has been desired to reduce the amount of protrusion of the low melting point metal and the crimped portion from the soluble conductor portion as much as possible.

そこで、本発明は、可溶導体部からの低融点金属や加締め部の突出量を抑制し、小型化を実現できるヒューズの提供を目的とする。   Therefore, an object of the present invention is to provide a fuse capable of reducing the size by suppressing the low melting point metal from the fusible conductor portion and the protruding amount of the caulking portion.

上述した課題を解決するため、本発明は、次のような特徴を有している。まず、本発明の第１の特徴は、相手側端子と接続される一対の端子接続部と、一対の前記端子接続部の間に設けられて定格以上の電流を遮断する可溶部とを備え、一対の前記端子接続部と前記可溶部とが導通性のプレートによって一体に形成されたヒューズであって、前記各端子接続部は、本体面と、前記本体面から折り曲げられて前記本体面に接触する折曲面とを備え、前記可溶部は、一対の前記本体面同士を連結する可溶導体部と、前記可溶導体部に設けられて前記可溶導体部よりも融点の低い金属からなる低融点金属と、前記低融点金属を加締めて固定する加締め部とを備え、前記加締め部は、前記折曲面側に折り曲げられて前記可溶導体部を固定することを要旨とする。   In order to solve the above-described problems, the present invention has the following features. First, the first feature of the present invention includes a pair of terminal connection portions connected to a counterpart terminal, and a fusible portion that is provided between the pair of terminal connection portions and blocks a current exceeding a rating. The pair of terminal connection portions and the fusible portion are integrally formed of a conductive plate, and each of the terminal connection portions is bent from the main body surface and the main body surface. And the fusible part includes a fusible conductor part that couples the pair of body surfaces to each other, and a metal that is provided in the fusible conductor part and has a lower melting point than the fusible conductor part. And a caulking portion for caulking and fixing the low melting point metal, and the caulking portion is bent toward the folding surface to fix the soluble conductor portion. To do.

かかる特徴によれば、加締め部は、折曲面側に折り曲げられて可溶導体部を固定する。これにより、加締め部が折曲面の反対側に折り曲げられる場合と比較して、端子接続部（本体面及び折曲面）の厚さにできる限り近づけることができる。このため、折曲面からの低融点金属や加締め部の突出量を抑制し、ヒューズの小型化を実現できる。   According to this feature, the caulking portion is bent to the folding surface side to fix the soluble conductor portion. Thereby, compared with the case where a crimping part is bend | folded on the opposite side of a folding surface, it can be as close as possible to the thickness of a terminal connection part (a main body surface and a folding surface). For this reason, the amount of protrusion of the low melting point metal and the caulking portion from the bent surface can be suppressed, and the fuse can be downsized.

加えて、端子接続部は、本体面と、本体面から折り曲げられて本体面に接触する折曲面とを備える。これにより、ヒューズの製造に使用されるプレートの板厚を薄くしてヒューズの軽量化を実現しても、端子接続部の剛性を確保できる。   In addition, the terminal connection portion includes a main body surface and a bent curved surface that is bent from the main body surface and contacts the main body surface. Thereby, even if the thickness of the plate used for manufacturing the fuse is reduced and the fuse is reduced in weight, the rigidity of the terminal connection portion can be ensured.

本発明の第２の特徴は、本発明の第１の特徴に係るヒューズであって、前記端子接続部は、前記可溶導体部の延在方向に直交する方向に沿って長尺状に形成され、前記加締め部は、前記可溶導体部の両側縁から前記端子接続部に沿って突出した加締め片によって形成され、前記可溶導体部の両側縁から前記低融点金属を包囲するように加締められることを要旨とする。   A second feature of the present invention is the fuse according to the first feature of the present invention, wherein the terminal connection portion is formed in an elongated shape along a direction orthogonal to the extending direction of the fusible conductor portion. The caulking part is formed by caulking pieces protruding along the terminal connection part from both side edges of the fusible conductor part, and surrounds the low melting point metal from both side edges of the fusible conductor part. The gist is that it is crimped.

かかる特徴によれば、加締め部は、加締め片によって形成され、可溶導体部の両側縁から低融点金属を包囲するように加締められる。これにより、加締め部が可溶導体部の片側縁から低融点金属を包囲する場合と比較して、低融点金属をより確実に固定できる。   According to this feature, the caulking portion is formed by caulking pieces and is caulked so as to surround the low melting point metal from both side edges of the soluble conductor portion. Thereby, compared with the case where a caulking part surrounds a low melting metal from the one side edge of a soluble conductor part, a low melting metal can be fixed more reliably.

本発明の第３の特徴は、本発明の第１又は第２の特徴に係るヒューズであって、前記本体面は、前記可溶導体部が連結される内側縁部と、前記内側縁部に対向して前記内側縁部よりも外側に位置する外側縁部とを備え、前記折曲面は、前記外側縁部に連結されることを要旨とする。   A third feature of the present invention is the fuse according to the first or second feature of the present invention, wherein the main body surface includes an inner edge portion to which the fusible conductor portion is coupled, and an inner edge portion. And an outer edge located opposite to the inner edge, and the folded curved surface is connected to the outer edge.

かかる特徴によれば、折曲面は、外側縁部に連結される。これにより、ヒューズの製造に使用されるプレートの打ち抜き加工の際、折曲面が上側部や下側部に連結される場合と比較して、プレートを有効に使用することができる。このため、プレートの無駄を削減でき、ヒューズの製造コストを低減できる。   According to this feature, the folding surface is connected to the outer edge. Thereby, in the punching process of the plate used for manufacturing the fuse, the plate can be used effectively as compared with the case where the folding surface is connected to the upper part or the lower part. For this reason, the waste of a plate can be reduced and the manufacturing cost of a fuse can be reduced.

本発明の第４の特徴は、本発明の第１又は第２の特徴に係るヒューズであって、前記本体面は、前記可溶導体部が連結される内側縁部と、前記内側縁部に対向して前記内側縁部よりも外側に位置する外側縁部と、前記内側縁部と前記外側縁部とを連結する側部とを備え、前記折曲面は、前記側部に連結されることを要旨とする。   A fourth feature of the present invention is the fuse according to the first or second feature of the present invention, wherein the main body surface includes an inner edge portion to which the fusible conductor portion is coupled, and an inner edge portion. An outer edge located opposite to the inner edge, and a side connecting the inner edge and the outer edge, the folding surface being connected to the side Is the gist.

かかる特徴によれば、折曲面は、側部に連結される。つまり、相手側端子への端子接続部の挿入方向の先端が曲面に形成される。これにより、相手側端子へ端子接続部を挿入し易くなる。このため、相手側端子への端子接続部の挿入力が低減し、相手側端子へヒューズを取り付け易くなる。   According to this feature, the folded curved surface is connected to the side portion. That is, the tip in the insertion direction of the terminal connection portion to the mating terminal is formed in a curved surface. Thereby, it becomes easy to insert a terminal connection part into the other party terminal. For this reason, the insertion force of the terminal connection part to the counterpart terminal is reduced, and it becomes easy to attach the fuse to the counterpart terminal.

本発明の特徴によれば、可溶導体部からの低融点金属や加締め部の突出量を抑制し、小型化を実現できるヒューズを提供することができる。   According to the characteristics of the present invention, it is possible to provide a fuse capable of reducing the size by suppressing the low-melting point metal from the fusible conductor portion and the protruding amount of the caulking portion.

図１は、本実施形態に係るヒューズを示す斜視図である。FIG. 1 is a perspective view showing a fuse according to the present embodiment. 図２は、本実施形態に係るヒューズを示す分解斜視図である。FIG. 2 is an exploded perspective view showing the fuse according to the present embodiment. 図３は、本実施形態に係るヒューズを示す正面・平面・側面図である。FIG. 3 is a front, plan, and side view illustrating the fuse according to the present embodiment. 図４は、本実施形態に係る端子接続部及び可溶部を示す正面・平面・側面図である。FIG. 4 is a front view, a plan view, and a side view showing the terminal connection portion and the fusible portion according to this embodiment. 図５は、本実施形態に係る端子接続部及び可溶部を示す展開図である。FIG. 5 is a development view showing the terminal connection portion and the fusible portion according to the present embodiment. 図６は、変更例に係る端子接続部及び可溶部を示す斜視図及び展開図である。FIG. 6 is a perspective view and a developed view showing the terminal connection portion and the fusible portion according to the modified example.

次に、本発明に係るヒューズの実施形態について、図面を参照しながら説明する。なお、以下の図面の記載において、同一または類似の部分には、同一または類似の符号を付している。ただし、図面は模式的なものであり、各寸法の比率などは現実のものとは異なることに留意すべきである。したがって、具体的な寸法などは以下の説明を参酌して判断すべきである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれ得る。   Next, an embodiment of a fuse according to the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Accordingly, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

（ヒューズの構成）
まず、本実施形態に係るヒューズ１の構成について、図面を参照しながら説明する。図１は、本実施形態に係るヒューズ１を示す斜視図である。図２は、本実施形態に係るヒューズ１を示す分解斜視図である。図３は、本実施形態に係るヒューズ１を示す正面・平面・側面図である。図４は、本実施形態に係る端子接続部１０及び可溶部２０を示す正面・平面・側面図である。図５は、本実施形態に係る端子接続部１０及び可溶部２０を示す展開図である。なお、本実施形態に係るヒューズ１は、不図示の相手側端子（例えば、音叉端子）と接続されるものである。 (Fuse configuration)
First, the configuration of the fuse 1 according to the present embodiment will be described with reference to the drawings. FIG. 1 is a perspective view showing a fuse 1 according to the present embodiment. FIG. 2 is an exploded perspective view showing the fuse 1 according to the present embodiment. FIG. 3 is a front, plan, and side view showing the fuse 1 according to the present embodiment. FIG. 4 is a front view, a plan view, and a side view showing the terminal connection portion 10 and the fusible portion 20 according to the present embodiment. FIG. 5 is a development view showing the terminal connection part 10 and the fusible part 20 according to the present embodiment. Note that the fuse 1 according to the present embodiment is connected to a not-shown counterpart terminal (for example, a tuning fork terminal).

図１〜図３に示すように、ヒューズ１は、相手側端子と接続される一対の端子接続部１０と、端子接続部１０と一体に形成されて定格以上の電流（いわゆる、過電流）を遮断する可溶部２０と、端子接続部１０の一部を露出した状態で可溶部２０を覆うカバー部材３０とを備えている。これらの端子接続部１０及び可溶部２０は、導通性のプレート（図５参照）によって一体に形成される。   As shown in FIGS. 1 to 3, the fuse 1 is formed integrally with the pair of terminal connection parts 10 connected to the counterpart terminal and the terminal connection part 10, and has a current exceeding the rating (so-called overcurrent). A fusible part 20 to be blocked and a cover member 30 covering the fusible part 20 in a state where a part of the terminal connecting part 10 is exposed are provided. The terminal connection part 10 and the fusible part 20 are integrally formed by a conductive plate (see FIG. 5).

具体的には、各端子接続部１０は、上下方向に沿って長尺状に形成されている。各端子接続部１０には、カバー部材３０に固定される固定孔１０Ａ（図２参照）が形成されている。各端子接続部１０は、図４及び図５に示すように、可溶部２０（後述する可溶導体部２１）に連なる本体面１１と、本体面１１から折り曲げられて本体面１１に接触する折曲面１２とを備えている。   Specifically, each terminal connection portion 10 is formed in an elongated shape along the vertical direction. Each terminal connection portion 10 is formed with a fixing hole 10 </ b> A (see FIG. 2) that is fixed to the cover member 30. As shown in FIG. 4 and FIG. 5, each terminal connection portion 10 is bent from the main body surface 11 connected to the fusible portion 20 (a fusible conductor portion 21 described later) and comes into contact with the main body surface 11. And a folding surface 12.

本体面１１は、可溶部２０（後述する可溶導体部２１）が連結される内側縁部１１Ａと、内側縁部１１Ａに対向して内側縁部１１Ａよりも外側（図面の左側或いは右側）に位置する外側縁部１１Ｂと、内側縁部１１Ａと外側縁部１１Ｂとを連結する側部（上側部１１Ｃ及び下側部１１Ｄ）とを備えている。   The main body surface 11 has an inner edge portion 11A to which a soluble portion 20 (soluble conductor portion 21 to be described later) is connected, and an outer side of the inner edge portion 11A opposite to the inner edge portion 11A (the left side or the right side in the drawing). And an outer edge portion 11B positioned on the side, and side portions (an upper portion 11C and a lower portion 11D) that connect the inner edge portion 11A and the outer edge portion 11B.

折曲面１２は、本体面１１とほぼ同様の形状を有している。図５に示すように、折曲面１２は、本体面１１の外側縁部１１Ｂに連結されている。   The folding surface 12 has substantially the same shape as the main body surface 11. As shown in FIG. 5, the folded curved surface 12 is connected to the outer edge portion 11 </ b> B of the main body surface 11.

可溶部２０は、図４及び図５に示すように、一対の本体面１１同士を連結する可溶導体部２１と、可溶導体部２１に設けられて可溶導体部２１よりも融点の低い金属（例えば、錫或いはその合金）からなる低融点金属２２と、低融点金属２２を加締めて固定する加締め部２３とを備えている。   As shown in FIGS. 4 and 5, the fusible part 20 is provided on the fusible conductor part 21 that connects the pair of main body surfaces 11 to each other and has a melting point higher than that of the fusible conductor part 21. A low melting point metal 22 made of a low metal (for example, tin or an alloy thereof) and a caulking portion 23 for caulking and fixing the low melting point metal 22 are provided.

加締め部２３は、図４及び図５に示すように、折曲面１２側に折り曲げられて可溶導体部２１を固定する。加締め部２３は、可溶導体部２１の両側縁から端子接続部１０の延在方向に沿って突出した加締め片によって形成されている。そして、加締め部２３は、可溶導体部２１の両側縁から低融点金属２２を包囲するように加締められる。   As shown in FIGS. 4 and 5, the caulking portion 23 is bent toward the folding surface 12 to fix the soluble conductor portion 21. The caulking portion 23 is formed by caulking pieces protruding from both side edges of the fusible conductor portion 21 along the extending direction of the terminal connection portion 10. The caulking portion 23 is caulked so as to surround the low melting point metal 22 from both side edges of the fusible conductor portion 21.

カバー部材３０は、図１〜図３に示すように、略Ｔ字状に形成されている。カバー部材３０は、アッパーカバー３１と、アッパーカバー３１に取り付けられるロワーカバー３２とを備えている。アッパーカバー３１の側縁（上下の側縁）には、係止凹部３１Ａがそれぞれ形成されている。アッパーカバー３１の端子接続部１０側の面には、端子接続部１０の固定孔１０Ａに挿入される突起部３１Ｂが形成されている。一方、ロワーカバー３２の側縁（上下の側縁）には、係止凹部３１Ａに係止される係止爪部３２Ａがそれぞれ形成されている。係止爪部３２Ａの間には、可溶部２０を目視可能な目視窓３２Ｂが形成されている。   The cover member 30 is formed in a substantially T shape as shown in FIGS. The cover member 30 includes an upper cover 31 and a lower cover 32 attached to the upper cover 31. Locking recesses 31 </ b> A are formed on the side edges (upper and lower side edges) of the upper cover 31, respectively. A protrusion 31 </ b> B that is inserted into the fixing hole 10 </ b> A of the terminal connection portion 10 is formed on the surface of the upper cover 31 on the terminal connection portion 10 side. On the other hand, on the side edges (upper and lower side edges) of the lower cover 32, locking claw portions 32A that are locked to the locking recesses 31A are formed. A viewing window 32B through which the fusible part 20 can be seen is formed between the locking claws 32A.

（作用・効果）
以上説明した本実施形態では、加締め部２３は、折曲面１２側に折り曲げられて可溶導体部２１を固定する。これにより、加締め部２３が折曲面１２の反対側に折り曲げられる場合と比較して、端子接続部１０（本体面１１及び折曲面１２）の厚さにできる限り近づけることができる。このため、折曲面１２からの低融点金属２２や加締め部２３の突出量を抑制し、ヒューズ１の小型化を実現できる。 (Action / Effect)
In the present embodiment described above, the caulking portion 23 is bent toward the folding surface 12 to fix the soluble conductor portion 21. Thereby, compared with the case where the crimping part 23 is bend | folded on the opposite side of the folding surface 12, it can be as close as possible to the thickness of the terminal connection part 10 (the main body surface 11 and the folding surface 12). For this reason, the protrusion amount of the low melting point metal 22 and the caulking portion 23 from the folding surface 12 can be suppressed, and the fuse 1 can be downsized.

加えて、端子接続部１０は、本体面１１と、本体面１１から折り曲げられて本体面１１に接触する折曲面１２とを備える。これにより、ヒューズ１の製造に使用されるプレートの板厚を薄くしてヒューズ１の軽量化を実現しても、端子接続部１０の剛性を確保できる。   In addition, the terminal connection unit 10 includes a main body surface 11 and a bent curved surface 12 that is bent from the main body surface 11 and contacts the main body surface 11. Thereby, even if the thickness of the plate used for manufacturing the fuse 1 is reduced and the weight of the fuse 1 is reduced, the rigidity of the terminal connection portion 10 can be ensured.

本実施形態では、加締め部２３は、加締め片によって形成され、可溶導体部２１の両側縁から低融点金属２２を包囲するように加締められる。これにより、加締め部２３が可溶導体部２１の片側縁から低融点金属２２を包囲する場合と比較して、低融点金属２２をより確実に固定できる。   In this embodiment, the caulking portion 23 is formed by caulking pieces and is caulked so as to surround the low melting point metal 22 from both side edges of the soluble conductor portion 21. Thereby, compared with the case where the crimping part 23 surrounds the low melting-point metal 22 from the one side edge of the soluble conductor part 21, the low-melting-point metal 22 can be fixed more reliably.

本実施形態では、折曲面１２は、外側縁部１１Ｂに連結される。これにより、ヒューズ１の製造に使用されるプレートの打ち抜き加工の際、折曲面１２が上側部１１Ｃや下側部１１Ｄに連結される場合と比較して、プレートを有効に使用することができる。このため、プレートの無駄を削減でき、ヒューズ１の製造コストを低減できる。   In the present embodiment, the folding surface 12 is connected to the outer edge portion 11B. Thereby, when punching a plate used for manufacturing the fuse 1, the plate can be used more effectively than when the folding surface 12 is connected to the upper part 11 </ b> C or the lower part 11 </ b> D. For this reason, the waste of a plate can be reduced and the manufacturing cost of the fuse 1 can be reduced.

加えて、各端子接続部１０が上下方向に沿って長尺状に形成されることに伴い、折曲面１２は、上側部１１Ｃや下側部１１Ｄよりも長い外側縁部１１Ｂに連結される。このため、本体面１１と折曲面１２との固定強度が増大し、端子接続部１０の剛性を確実に向上できる。   In addition, as each terminal connection portion 10 is formed in an elongated shape along the vertical direction, the folding surface 12 is coupled to the outer edge portion 11B that is longer than the upper portion 11C and the lower portion 11D. For this reason, the fixing strength between the main body surface 11 and the folded curved surface 12 is increased, and the rigidity of the terminal connection portion 10 can be reliably improved.

（変更例）
次に、上述した実施形態に係る端子接続部１０の変更例について、図面を参照しながら説明する。図６は、変更例に係る端子接続部１０及び可溶部２０を示す斜視図及び展開図である。なお、上述した実施形態に係る端子接続部１０と同一部分には同一の符号を付して、相違する部分を主として説明する。 (Example of change)
Next, a modified example of the terminal connection unit 10 according to the above-described embodiment will be described with reference to the drawings. FIG. 6 is a perspective view and a developed view showing the terminal connecting portion 10 and the fusible portion 20 according to the modified example. In addition, the same code | symbol is attached | subjected to the same part as the terminal connection part 10 which concerns on embodiment mentioned above, and a different part is mainly demonstrated.

上述した実施形態では、端子接続部１０の折曲面１２は、本体面１１の外側縁部１１Ｂに連結されている。これに対して、変更例では、図６に示すように、端子接続部１０の折曲面１２は、本体面１１の下側部１１Ｄに連結されている。   In the embodiment described above, the folding surface 12 of the terminal connection portion 10 is connected to the outer edge portion 11 </ b> B of the main body surface 11. On the other hand, in the modified example, as shown in FIG.

このような変更例であっても、上述した実施形態と同様に、ヒューズ１の小型化を実現できるとともに、ヒューズ１の製造に使用されるプレートの板厚を薄くしてヒューズ１の軽量化を実現した場合であっても、端子接続部１０の剛性を確保できる。   Even in such a modified example, the fuse 1 can be reduced in size as in the above-described embodiment, and the thickness of the plate used for manufacturing the fuse 1 can be reduced to reduce the weight of the fuse 1. Even if it is realized, the rigidity of the terminal connecting portion 10 can be ensured.

加えて、変更例では、折曲面１２は、本体面１１の下側部１１Ｄに連結される。つまり、相手側端子への端子接続部１０の挿入方向の先端が曲面に形成される。これにより、相手側端子へ端子接続部１０を挿入し易くなる。このため、相手側端子への端子接続部１０の挿入力が低減し、相手側端子へヒューズ１を取り付け易くなる。   In addition, in the modified example, the folded curved surface 12 is coupled to the lower side portion 11D of the main body surface 11. That is, the tip in the insertion direction of the terminal connection portion 10 to the mating terminal is formed into a curved surface. Thereby, it becomes easy to insert the terminal connection part 10 in the other party terminal. For this reason, the insertion force of the terminal connection part 10 to the other party terminal reduces, and it becomes easy to attach the fuse 1 to the other party terminal.

（その他の実施形態）
上述したように、本発明の実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなる。 (Other embodiments)
Although the contents of the present invention have been disclosed through the embodiments of the present invention as described above, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

例えば、本発明の実施形態は、次のように変更することができる。具体的には、加締め部２３は、可溶導体部２１の両側縁から端子接続部１０の上下方向に沿って突出した加締め片によって形成されるものとして説明したが、これに限定されるものではなく、端子接続部１０の片側に突出した加締め片によって形成されていてもよい。   For example, the embodiment of the present invention can be modified as follows. Specifically, the caulking portion 23 has been described as being formed by caulking pieces protruding from both side edges of the fusible conductor portion 21 along the vertical direction of the terminal connection portion 10, but is not limited thereto. It may be formed by the crimping piece which protruded to the one side of the terminal connection part 10 instead of a thing.

また、端子接続部１０の折曲面１２は、外側縁部１１Ｂ或いは下側部１１Ｄに連結されるものとして説明したが、これに限定されるものではなく、上側部１１Ｃに連結されていてもよい。   Moreover, although the folding surface 12 of the terminal connection part 10 was demonstrated as what is connected with the outer side edge part 11B or the lower side part 11D, it is not limited to this, You may be connected with the upper part 11C. .

このように、本発明は、ここでは記載していない様々な実施の形態などを含むことは勿論である。したがって、本発明の技術的範囲は、上述の説明から妥当な特許請求の範囲に係る発明特定事項によってのみ定められる。   As described above, the present invention naturally includes various embodiments that are not described herein. Therefore, the technical scope of the present invention is determined only by the invention specifying matters according to the scope of claims reasonable from the above description.

１…ヒューズ
１０…端子接続部
１０Ａ…固定孔
１１…本体面
１１Ａ…内側縁部
１１Ｂ…外側縁部
１１Ｃ…上側部
１１Ｄ…下側部
１２…折曲面
２０…可溶部
２１…可溶導体部
２２…低融点金属
２３…加締め部
３０…カバー部材
３１…アッパーカバー
３１Ａ…係止凹部
３１Ｂ…突起部
３２…ロワーカバー
３２Ａ…係止爪部
３２Ｂ…目視窓 DESCRIPTION OF SYMBOLS 1 ... Fuse 10 ... Terminal connection part 10A ... Fixed hole 11 ... Main body surface 11A ... Inner edge part 11B ... Outer edge part 11C ... Upper side part 11D ... Lower side part 12 ... Folding curved surface 20 ... Soluble part 21 ... Soluble conductor part 22 ... Low melting point metal 23 ... Caulking part 30 ... Cover member 31 ... Upper cover 31A ... Locking recess 31B ... Projection part 32 ... Lower cover 32A ... Locking claw part 32B ... Viewing window

Claims (5)

相手側端子と接続される一対の端子接続部と、一対の前記端子接続部の間に設けられて定格以上の電流を遮断する可溶部とを備え、一対の前記端子接続部と前記可溶部とが導通性のプレートによって一体に形成されたヒューズであって、
前記各端子接続部は、本体面と、この本体面に重なっている折曲面とを備えて構成されており、前記本体面と前記折曲面とは、これらの一方の端の側部を介してつながっており、
前記可溶部は、一対の前記本体面同士を連結する可溶導体部と、前記可溶導体部に設けられて前記可溶導体部よりも融点の低い金属からなる低融点金属と、前記折曲面側に折れ曲がった状態で前記可溶導体部を固定している加締め部とを備えていることを特徴とするヒューズ。 A pair of terminal connection portions connected to the counterpart terminal, and a fusible portion that is provided between the pair of terminal connection portions and cuts off a current exceeding the rating, and the pair of terminal connection portions and the fusible portion A fuse integrally formed by a conductive plate,
Each of the terminal connection portions includes a main body surface and a folding surface that overlaps the main body surface, and the main body surface and the folding surface are arranged via a side portion of one end thereof. Connected,
The fusible part includes a fusible conductor part that connects a pair of the main body surfaces, a low melting point metal that is provided on the fusible conductor part and has a lower melting point than the fusible conductor part, and the folding A fuse , comprising: a caulking portion that fixes the fusible conductor portion in a state bent to the curved surface side . 請求項１に記載のヒューズであって、
前記端子接続部は、前記可溶導体部の延在方向に直交する方向に沿って長尺状に形成され、
前記加締め部は、前記可溶導体部の両側縁から前記端子接続部に沿って突出している加締め片によって形成されており、前記可溶導体部の両側縁から前記低融点金属を包囲していることを特徴とするヒューズ。 The fuse of claim 1,
The terminal connection part is formed in a long shape along a direction orthogonal to the extending direction of the soluble conductor part,
The caulking portion, the friendly and from both side edges of the溶導body is formed by crimping pieces projecting along the terminal connecting portion, surrounding said low melting point metal from both side edges of the accepted溶導body fuse, characterized in that is. 請求項１又は請求項２に記載のヒューズであって、
前記本体面は、前記可溶導体部が連結される内側縁部と、前記内側縁部に対向して前記内側縁部よりも外側に位置する外側縁部とを備え、
前記折曲面は、前記外側縁部に連結されることを特徴とするヒューズ。 A fuse according to claim 1 or claim 2, wherein
The main body surface includes an inner edge portion to which the soluble conductor portion is coupled, and an outer edge portion that faces the inner edge portion and is located outside the inner edge portion,
The fuse is characterized in that the folding surface is connected to the outer edge. 請求項１又は請求項２に記載のヒューズであって、
前記本体面は、前記可溶導体部が連結される内側縁部と、前記内側縁部に対向して前記内側縁部よりも外側に位置する外側縁部と、前記内側縁部と前記外側縁部とを連結する側部とを備え、
前記折曲面は、前記側部に連結されることを特徴とするヒューズ。 A fuse according to claim 1 or claim 2, wherein
The main body surface includes an inner edge to which the fusible conductor portion is coupled, an outer edge that faces the inner edge and is positioned outside the inner edge, and the inner edge and the outer edge. A side portion connecting the portions,
The fuse is characterized in that the folding surface is connected to the side portion. 相手側端子と接続される一対の端子接続部と、一対の前記端子接続部の間に設けられて定格以上の電流を遮断する可溶部とを備え、一対の前記端子接続部と前記可溶部とが導通性のプレートによって一体に形成されたヒューズの製造方法であって、  A pair of terminal connection portions connected to the counterpart terminal, and a fusible portion that is provided between the pair of terminal connection portions and cuts off a current exceeding the rating, and the pair of terminal connection portions and the fusible portion And a method of manufacturing a fuse integrally formed with a conductive plate,
前記各端子接続部は、本体面と、前記本体面から折り曲げられて前記本体面に接触する折曲面とを備え、  Each of the terminal connection portions includes a main body surface, and a folded curved surface that is bent from the main body surface and contacts the main body surface,
前記可溶部は、一対の前記本体面同士を連結する可溶導体部と、前記可溶導体部に設けられて前記可溶導体部よりも融点の低い金属からなる低融点金属と、前記低融点金属を加締めて固定する加締め部とを備え、  The soluble portion includes a soluble conductor portion that connects a pair of body surfaces, a low melting point metal that is provided on the soluble conductor portion and has a lower melting point than the soluble conductor portion, and the low melting point. A caulking part for caulking and fixing the melting point metal,
前記加締め部は、前記折曲面側に折り曲げられて前記可溶導体部を固定することを特徴とするヒューズの製造方法。  The method for manufacturing a fuse, wherein the caulking portion is bent toward the folding surface to fix the soluble conductor portion.
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JPS596606Y2 (en) * 1979-06-20 1984-02-29 恒助 高野 small fuse
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US5598138A (en) * 1995-01-03 1997-01-28 Jaronczyk, Jr.; Joseph P. Fault-indicating blade fuse
JPH09223449A (en) * 1995-10-20 1997-08-26 Yazaki Corp Fuse element
US5818320A (en) * 1996-10-08 1998-10-06 Yazaki Corporation Fuse assembly with removable fusible element
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JP2010287443A (en) * 2009-06-12 2010-12-24 Yazaki Corp Fuse
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